After a period of time, around 15-30 minutes the server suddenly crashes

So I have a problem with server.

Server software is magma version 1.12.2 (vf3a5280).

After a period of time, around 15-30 minutes the server suddenly crashes and then the server Web page says that it malfuncioned or just closing and saving.

There are about 50 mods on the server so maybe that is why it causes problems.

Here's server log:

https://mclo.gs/q6GH4mb

Is that because of too many mods or is it something else?